我想在Android Studio中但每次我试图使用该库并运行它时使用JavaCV,它崩溃和logcat的显示这个错误..的NoClassDefFoundError和ClassNotFoundException的上JavaCV库
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: FATAL
EXCEPTION: main
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: org.bytedeco.javacpp.opencv_core
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at org.bytedeco.javacpp.Loader.load(Loader.java:392)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at org.bytedeco.javacpp.Loader.load(Loader.java:358)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at org.bytedeco.javacpp.opencv_imgcodecs.<clinit>(opencv_imgcodecs.java:13)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at com.example.user.dmr.MainActivity.onCreate(MainActivity.java:20)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.Activity.performCreate(Activity.java:5122)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1084)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2307)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2395)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.ActivityThread.access$600(ActivityThread.java:162)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:107)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.os.Looper.loop(Looper.java:194)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5392)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at java.lang.reflect.Method.invokeNative(Native Method)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:525)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at dalvik.system.NativeStart.main(Native Method)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: org.bytedeco.javacpp.opencv_core
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at java.lang.Class.classForName(Native Method)
01-03 09:16:32.242 15233-15233/com.example.user.dmr E/AndroidRuntime: at java.lang.Class.forName(Class.java:217)
这是我试图运行的Android Studio中的java代码:
package com.example.user.dmr;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
import static org.bytedeco.javacpp.opencv_core.*;
import static org.bytedeco.javacpp.opencv_imgcodecs.cvLoadImage;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView v = (TextView) findViewById(R.id.textview1);
IplImage image = cvLoadImage("drawable/face1.JPG"); //crashes when it read this line
if (image == null) {
v.setText("Fail");
} else {
v.setText("Succeed");
}
}
}
我已经在外部库中添加了javacv库。这是我添加到build.gradle中的依赖关系。
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile group: 'org.bytedeco', name: 'javacv', version: '1.0'
}
任何想法为什么它继续发生,以及如何解决它?谢谢。
你使用ProGuard? – Nizam
我这么认为,因为的build.gradle包含此行:buildTypes { 发布{ minifyEnabled假 proguardFiles getDefaultProguardFile( 'proguard的-android.txt'), 'proguard-rules.pro' }} 然后 – Cael
它不应该是一个proguard问题,因为'minifyEnabled'是'false' – Nizam